The innovative and comprehensive UltraSafe™ range of Mersen fuse-holders. Modular fuse-holders are finger-safe under IEC standards to an IP20 grade of protection, including fuse changing (with the flick of a finger). Modular fuse-holders are available in 1, 2, 3 or 4 poles, with or without visual blown fuse indicator, in UL + IEC version. Multi-pole units can also be field assembled by ordering pin-ties assembly kit. In this size, the range also offers the possibility to use microswitches (supplied with the holders or ordered separately) to allow remote indication. UltraSafe™ range is made of tough and durable thermoplastic or thermoset material.

AC Voltage 750 VAC

DC Voltage 750 VDC

Ampere 50 A

Size per Standard

14x51
14x51mm

Mounting Installation On To DIN Rails To EN 60716

SCCR

100 kA
100kA
200 kA

Wiring Range #2 to #14 Solid/Stranded Cu Wire

Enclosure IP20

Number of Poles

1
1 + N
1, 2, 3
2
3
3 + N
4
N

Standards

UL Recognized Component, UL4248, guide IZLT2, file E52283
CSA Certified C22.2, class 6225, file 32169
IEC 60269-2 and IEC 60947-3
RoHS Compliant
Plastic material: NF 16101 & 16102 Requirement 2 Compliant

Applications

All circuits up to 750V for protection of motors, transformers, low voltage distribution, control circuits.
Non-load operation.

Products

• US141 - Z331153
• US141I - A331154
• US141M - B331155
• US141MI - C331156
• US141N - D331157
• US141NI - Z227906
• US141NM - A227907
• US141NMI - B227908
• US142 - G331137
• US142I - H331138
• US142M - J331139
• US142M2 - L331141
• US142M2I - M331142
• US142MI - K331140
• US143 - N331143
• US143I - P331144
• US143M - Q331145
• US143M2 - T331148
• US143M2I - W331150
• US143MI - S331147
• US143N - X331151
• US143NI - R227922
• US143NM - Y331152
• US143NM2 - V227925
• US143NM2I - W227926
• US143NMI - T227924
• US144
• US144I
• US144M
• US144M2
• US144M2I
• US144MI
• US14N - S227900
• US14PAK - X227927
• US14S1P - Y227928
• US14S3P - Z227929
• US14S3P2 - A227930